There are two options: NO and NC.
If alarm input type of the alarm device you purchased is NO, then you
should select NO; otherwise you should select NC.
Fire Link Enable
If fire link is enabled the access controller will output alarms when fire
alarms are triggered. The alarm details will be displayed in the alarm
log.
Alarm output and access link are NO by default if fire link is enabled.
Alarm Output Enable
The relay can output alarm information (will be sent to the management
platform) if the Alarm Output is enabled.
Duration (Sec.)
The alarm duration, and the range is 1–300 seconds.
Alarm Output Channel
You can select an alarm output channel according to the alarming
device that you have installed. Each alarm device can be regarded as
a channel.
Access Link Enable
After the Access Link is enabled, the access controller will be normally
on or normally closed when there are input alarm signals.